Service manual

GE MEDICAL SYSTEMS
D
IRECTION 2300749-100, REVISION 2LOGIQ
TM
3 SERVICE MANUAL
Chapter 5 5-15
5-6-1 Front End
5-6-1-1 Connector Board
Overview
Conn. Board contains of 2 phased array probe connectors and provides switchable connection between
probes and transmitters/receivers.
The main function of Connector Board is as follows.
- 2-to-1 selectors for two probes.
- Interface with USC bus (control bus)
- Interface with FEC ASSY for IIC bus.
- Supply/Cut control and failure detection of supply voltage for Mux circuit in a Probe.
- Device: Mechanical Relay
- Switch: 128Ch 2:1 selector
- Max. Voltage: 140Vp-p
- Max. current: 0.5A
Interface to Probe
• Probe Status detection
- Detects whether or not a probe is connected.(POPEN)
- Detects ID code of a connected probe.(PCODE)
• Mux Interface
- Transfers control data of Mux to a probe.(CONSYS,CONSTA)
- Enables/Disables control of data.
- Detects whether Mux data setting is finished or not.
Figure 5-11 Connector Board
Probe
Connector
Probe
Connector
Relays
HV
Mux
128
128
128
FPGA
Config
ROM
B
U
F
USC Interface (From FEC)
Transmit/Receive Board
48
Control
HV Supply
RELAY
EEPROM
IIC Bus